Dispenser for viscous material



i 7, 1953 H. M. HOSMER 2,634,024 I DISPENSER FOR VISCOUS MATERIAL Filed Nov. 26, 1948 i I J l I l 2 Z I I I l INVENTOR. l-lA/ZKY M. HOS/WEE Patented Apr. 7, 19 53 lT ED TA FATE NT QFFI GE JDISPENSERZJEOR VISCOUS MATERIAL .Harry'MIHosmer, MilI'Valley, Calif.

ApplicationNovember 26;1948, Serial No.262;056:

"3 .Claims. :1 *;This dnventionirelatesto adispenserior viscous ;in1aterial.1.-such;s:as; pastes. creams, .ointments, and ;any':'.other materialsgof. similar physical char- :ncteristics.

. lQne f theaobiectshof .thednvention isi'the :provisionofz-a container; and dispenser for viscous :zmate'rial thatha's. suflicient rigidity. to. withstand accidental distortion, breakage, and yet which is :compact, light inweight,=-and as easily carried as conventional 'distortable tubes such as are em- :ployed for tooth paste and other material.

- .'Anotherv object of the. invention is the provisi-on of a container and dispenser for viscous ;-material that isadapt-ed to be supported upright on :oneend, and from whichthe'contents is "readily" and easily discharged by meremanual rrotatio'n of oneipart relative to the other.

=A-9Sti11 further object of the invention is the :provision of a container and dispenser for viscous imaterial that is automatically shortened .ordecreased in size in direct proportion to the amount ofrrmaterial discharged.therefrom; yet which. con- :tainerxisrelatively rigid and may stand upright ionr'one end at; any time and 19110131 susceptible. to

-.xaociden.tal breakage. or distortion.

.Anradditional object ;of the invention is the rprovisiongof Ha "compact, simple container and .dispenser for *viscous material that'includesa -closure haying apertured piston means-for forcing material fromlthe'containerand at. thesamex- "timeparingiaway the :container in 'direct;.,propor- :tion .tocthe material discharged from said -:conltainer tuntil :all of the material has been disch'arged from "the container and substantiallyall that remains is the closure and bottom of. said container.

An:added object isthe' provision of az'relatively .crigid walled-e-container :and I dispenser .for viscous -:mater ial;thati iS':SiIlfl131e to makeneasyto userand =which icont'ainer 2 includes :means for effecting. :a

imore-nomplete exhaustion :of :material there- 1 from than: in: the case..ofrconventionaltubesrsuch --as those employed for-tooth paste andfin which rthezgwalls'are distorted in order toeffect 'aidischarge'of material. i

Other objects and advantages "will 1 appear "in the description and in the drawings.

,"In the drawings,

Fig. 1 is aside elevational view of the container and dispenser.

'- 'F-ig. 2 is'an enlarged 'vertical partsection'al-and part elevational view taken substantially along line 221of:-Fig.,:"1.

Fig.3 is a sectional view taken along line .,3-.-3

J In detail, the main bodyiof the dispenser as v illustrated, comprises a cylindrical container,

generally designated I. having -a'zcylindrical wall 2 and'an end wall 3. Theend of the container \oppositelthe end wall .3..is:open,sand axiallylfacing side or end wall 3 thatis directed toward the .2 open,- end. is preferably .convexly. curvedas: shown inliig. ;2.

' The r'cylindrical' wall :of the. container; isex- :ternally u-threaded .to g gprovideea .helical groove 4 extending from the open .endr-of the containen to the closed end. This; groove functions tonform; a helical line :of weakness as well. .as a-guide ..-for .a cutter and a thread on a closura generally :designated 6, which closure is constructed..-as follows:

* Closure 6 comprises-a central piston portion-I that includesa top wall. 8 opposed to bottom wall '3 and having curved concavely on the-sidefacing the bottom wall to correspond with the convex curve of the latter. This top wall is formed. with a central externally threaded and :centrallyapertured boss 9 that projects in a direction axially outwardly of the container. A conventional internally threaded cap 10- is. adapted to tbesecured by its thread-on bossfl.

Said piston portion I has" acylindrical peripheral surface I -I that is adapted to relativelyelosely -fit within the container for lrotaryuand linear movement ofsaid iporti'on relative .to the ax-iseof said container. 7

Concentric with. piston portion 1 --.and spaced -outwardly thereofris an annular flange lzawhich flange is integrally :secured to the. portion Tby --annular-web i3 than-extends across the-outer edge of the container. It will be seen from.-the foregoing that the-eaxia-llyaextendi-ng,portion I, ,fiange l2. and web,- liv-ir-tua-lly form the walls .of

"an annular recess into which .the -outerend of .iiange I 2, which bladerhasr its rcutting edge 46 facing in the direction of arrow" (Fig. -3.)- which is the normal direction of rotation of the closure for screwing it ."onto thet container.

. li lange lzz is tor-med .withlaterally directed discharge opening .18 extending from the .trai-ling. edge. of -blade. l5, and -a wall 19 :extending across the .space :.2.0 (Fig. .3). mbetweenoflange .12

and portion 1 is providedfljust-above .thelevel of the blade I5.

.Uponrotationof theclosure indirection of .arrow I1, the cutting edge of.bladel'5-willlimmediately. commence. paring on: a stripqike portion of the container walls equalfin axial "thickness (relative-toaxis of containeril )to'the space between adjacent turns ofgzgroove T4, and the cutting action will bealongthe bottom of; groove .4 where the container walls rare :or minimum .thickness.

"The strip likeportionprogressivlypared'irom the container wall will pass out of the opening [8 in generally the direction of arrow 2! (Fig. 3).

Simultaneously with the paring off of the containerwall, the piston portion of the closure will move toward closed end 3, andthe viscous material of whatever kind that may be in container I will be forced out of the central aperture 23- in boss 9, it being assumed that cap Iii has first been removed.

The amount of material discharged from within the container is in exact proportion to the advance of the closure along the container and to the amount of the container that is pared away. When the closure reaches the bottom 3, all of the material between the closure and the bottom will 'be' dis-charged into aperture 23, and the amount of material that may be left in the aperture is directly proportional to the length of the same and its diameter. be relatively short, and in such a case the cap Obviously the boss?! may Ill may be made suificiently long to enable easy grasping by the fingers of the hand. If desired, the boss may be so short that the closed end of the cap is practically coplanar with the web 13.

While the cylindrical walls 2 may have an internal helical groove formed therein and portion 1 may be externally threaded to fit said groove,

" the present structure is preferable since a smooth inner surface on the container and a smooth outer surface on portion I insures a better fit "with nolikelihood of objectionable leakage if properly fitted.

The material of the container may be a plastic composition having easy cutting characteristics. The parings are, of course, easily broken away after they pass through the opening l8. Any

other desired material may be used or any suitable combination of diiferent materials. The cutter, of course, is preferably of steel. Its cutting life only extends to the cutting of one container, hence it need not be of any very costly material. This cutter, in which the closure is molded, may be molded into place or it may be inserted later on in any one of many suitable ways.

As is seen in the drawings, the container is adapted to be stood on end without lateral support, and the body is preferably sufficiently rigid to withstand accidental distortion and breakage. This rigidity enables the same to be readily held in a suitable wall clamp or bracket.

The pitch of the threads may be varied to adapt the container to relatively-heavy viscous material that would be difficult to easily dispense unless a relatively low degree of pitch is used.

It is also obvious that the closed end'of the container could be ap'ertured for discharge of material upon moving the closure carrying the cutter toward it.

While the cutter could be inclined so as to out its way toward the opposite end of the container j: irrespective of threads, or a groove in the container, the use of the groove is preferable since it greatly facilitates the cutting and insures a uniform out being made.

I claim:

1. A dispenser for viscous material comprising a tubular container closed at one end and an apertured closure at the opposite end in threaded engagement with said container for movement toward said closed end upon rotation of said closure in one direction relative to said container whereby said material will be forced out of said aperture, a cutter on said closure in engagement 7 with said container for progressively cutting away 4 the end of said container at said closure upon said rotation to permit said movement of said closure, the said closed end of said container comprising an end wall formed with a convexly curved inner surface facing toward said closure and the side of said closure facin said end wall being concavely curved complementary to the said curve of the surface of said end wall to facilitate substantially complete discharge of said material from said container when said closure is moved to said closed end.

2. A dispenser for viscous material comprising an externally cylindrical container open at one end and closed at the opposit end and having a continuous thread formed on its cylindrical outer side extending from said open end to substantially said closed end, a closure for said'open end having a flange projecting axially of said container over the outer side of the latterformed with an internal thread adapted to engag the thread on said container for movement of said closure toward said closed end upon rotation of said closure in one direction relative to said container, a cutter secured to said closure and extending transversely across the edge of said container at said open end and at a point spaced from the free edges of said flange for progressively cutting away said container as said closure is rotated to move toward said closed end, said closure being formed with a discharge opening for discharge of material from within said container under pressure created as said closure is moved toward said closed end, and an opening formed in said flange adjacent said cutter for discharge of the part of said container that is cut away by said cutter.

3. A dispenser for viscous material comprising a cylindrical tubular container open at one end and closed at the opposite end, the walls of which are externally threaded from said open end to substantially said closed end, a closure for said open end having a central piston portion projecting into said container and in relatively close fitting relationship to the inner surface of said container, a discharge aperture formed in said portion adapted to discharge material within said container upon movement of said portion toward I said closed end, a flange carried by said closure container from its open end upon said rotation of said closure, and an opening formed in said closure for discharge of the material of said container so cut away.

HARRY M. HOSMER.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,610,484 Boggero et al Dec. 14, 1926 1,762,943 Zauder June 10, 1930 FOREIGN PATENTS Number Country Date 446,327 Great Britain Apr. 28, 1936 

